下面修改 view_stu视图的语句中，正确的是

题目：下面修改 view_stu视图的语句中，正确的是

A. CREATE OR REPLACE VIEW view_stu IS SELECT * FROM student;

B. ALTER VIEW view_stu AS SELECT * FROM student;

C. ALTER VIEW view_stu IS SELECT * FROM student;

D. CREATE OR REPLACE VIEW view_stu AS SELECT * FROM student;

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